Merge ma_mixing into ma_engine.

research/ma_mixing.c

-#define MA_DEBUG_OUTPUT
-#define MA_IMPLEMENTATION
-#include "../miniaudio.h"
-#include "ma_mixing.h"
-
-ma_mixer g_mixer;
-ma_mixer g_mixerMusic;
-ma_mixer g_mixerEffects;
-
-ma_noise g_noise;
-ma_waveform g_waveform;
-ma_decoder g_decoder;
-ma_bool32 g_hasDecoder = MA_FALSE;
-ma_audio_buffer* g_pAudioBuffer;
-
-void data_callback(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
-{
-    (void)pFramesIn;
-
-    /* Make sure every output frame is written. */
-    while (frameCount > 0) {
-        ma_uint64 framesToMixOut;
-        ma_uint64 framesToMixIn;
-        ma_uint64 submixFrameCountOut;
-        ma_uint64 submixFrameCountIn;
-
-        framesToMixOut = frameCount;
-        ma_mixer_begin(&g_mixer, NULL, &framesToMixOut, &framesToMixIn);
-        {
-            /* Music. */
-            ma_mixer_begin(&g_mixerMusic, &g_mixer, &submixFrameCountOut, &submixFrameCountIn);
-            {
-                ma_mixer_mix_data_source(&g_mixerMusic, &g_noise,    submixFrameCountIn, 1, NULL, MA_FALSE);
-                ma_mixer_mix_data_source(&g_mixerMusic, &g_waveform, submixFrameCountIn, 1, NULL, MA_FALSE);
-            }
-            ma_mixer_end(&g_mixerMusic, &g_mixer, NULL);
-
-            /* Effects. */
-            ma_mixer_begin(&g_mixerEffects, &g_mixer, &submixFrameCountOut, &submixFrameCountIn);
-            {
-                if (g_hasDecoder) {
-                    ma_mixer_mix_data_source(&g_mixerEffects, &g_decoder, submixFrameCountIn, 1, NULL, MA_TRUE);
-                }
-                if (g_pAudioBuffer != NULL) {
-                    ma_mixer_mix_data_source(&g_mixerEffects, g_pAudioBuffer, submixFrameCountIn, 1, NULL, MA_TRUE);
-                }
-            }
-            ma_mixer_end(&g_mixerEffects, &g_mixer, NULL);
-        }
-        ma_mixer_end(&g_mixer, NULL, pFramesOut);
-
-        frameCount -= (ma_uint32)framesToMixOut;   /* Safe cast. */
-        pFramesOut  = ma_offset_ptr(pFramesOut, framesToMixOut * ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels));
-    }
-}
-
-int main(int argc, char** argv)
-{
-    ma_result result;
-    ma_device_config deviceConfig;
-    ma_device device;
-    ma_mixer_config mixerConfig;
-    ma_noise_config noiseConfig;
-    ma_waveform_config waveformConfig;
-    ma_decoder_config decoderConfig;
-    ma_audio_buffer_config audioBufferConfig;
-    void* pInputFileData2;
-    ma_uint64 inputFileDataSize2;
-    const char* pInputFilePath1 = NULL;
-    const char* pInputFilePath2 = NULL;
-    /*ma_effect_config effectConfig;*/
-    
-    if (argc > 1) {
-        pInputFilePath1 = argv[1];
-    }
-    if (argc > 2) {
-        pInputFilePath2 = argv[2];
-    }
-
-    deviceConfig = ma_device_config_init(ma_device_type_playback);
-    deviceConfig.playback.format   = ma_format_u8;
-    deviceConfig.playback.channels = 2;
-    deviceConfig.sampleRate        = 0;
-    deviceConfig.dataCallback      = data_callback;
-    deviceConfig.pUserData         = NULL;
-    result = ma_device_init(NULL, &deviceConfig, &device);
-    if (result != MA_SUCCESS) {
-        return (int)result;
-    }
-
-
-#if 0
-    /* Effect. */
-    effectConfig = ma_effect_config_init(ma_effect_type_lpf, /*device.playback.format*/ ma_format_f32, device.playback.channels, device.sampleRate);
-    effectConfig.lpf.cutoffFrequency = device.sampleRate / 16;
-    effectConfig.lpf.order = 8;
-    result = ma_effect_init(&effectConfig, &effect);
-    if (result != MA_SUCCESS) {
-        return result;
-    }
-#endif
-
-
-    /* Mixers. */
-    mixerConfig = ma_mixer_config_init(device.playback.format, device.playback.channels, 4096, NULL, NULL);
-    result = ma_mixer_init(&mixerConfig, &g_mixer);
-    if (result != MA_SUCCESS) {
-        return result;
-    }
-
-    result = ma_mixer_init(&mixerConfig, &g_mixerMusic);
-    if (result != MA_SUCCESS) {
-        return result;
-    }
-
-    result = ma_mixer_init(&mixerConfig, &g_mixerEffects);
-    if (result != MA_SUCCESS) {
-        return result;
-    }
-
-    ma_mixer_set_volume(&g_mixerEffects, 1.0f);
-
-#if 0
-    ma_mixer_set_effect(&g_mixerEffects, &effect);
-#endif
-
-    
-
-
-    /* Data sources.*/
-    noiseConfig = ma_noise_config_init(device.playback.format, device.playback.channels, ma_noise_type_brownian, 0, 0.2);
-    result = ma_noise_init(&noiseConfig, &g_noise);
-    if (result != MA_SUCCESS) {
-        return result;
-    }
-
-    waveformConfig = ma_waveform_config_init(device.playback.format, device.playback.channels, device.sampleRate, ma_waveform_type_sine, 0.5, 220);
-    result = ma_waveform_init(&waveformConfig, &g_waveform);
-    if (result != MA_SUCCESS) {
-        return result;
-    }
-
-    if (pInputFilePath1 != NULL) {
-        decoderConfig = ma_decoder_config_init(device.playback.format, device.playback.channels, device.sampleRate);
-        result = ma_decoder_init_file(pInputFilePath1, &decoderConfig, &g_decoder);
-        if (result == MA_SUCCESS) {
-            g_hasDecoder = MA_TRUE;
-        }
-    }
-
-    if (pInputFilePath2 != NULL) {
-        ma_decoder_config config = ma_decoder_config_init(ma_format_f32, 2, 0);
-        result = ma_decode_file(pInputFilePath2, &config, &inputFileDataSize2, &pInputFileData2);
-        if (result == MA_SUCCESS) {
-            audioBufferConfig = ma_audio_buffer_config_init(config.format, config.channels, inputFileDataSize2, pInputFileData2, NULL);
-            result = ma_audio_buffer_alloc_and_init(&audioBufferConfig, &g_pAudioBuffer);
-
-            ma_free(pInputFileData2, NULL);
-            pInputFileData2 = NULL;
-        }
-    }
-
-
-
-
-    /* Everything is setup. We can now start the device. */
-    result = ma_device_start(&device);
-    if (result != MA_SUCCESS) {
-        return result;
-    }
-
-    printf("Press Enter to quit...");
-    getchar();
-
-    return 0;
-}
\ No newline at end of file